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30190287881670 = 2357143763275627
BaseRepresentation
bin1101101110101001110010…
…11000101000010111000110
310221220011102001220201021020
412313110321120220113012
512424114202144203140
6144113120552532010
76234114322606350
oct667247130502706
9127804361821236
1030190287881670
11968a6a14a4a84
1234770b63b1006
1313acc165b7c37
147653096460d0
153754ba7a86d0
hex1b75396285c6

30190287881670 has 32 divisors (see below), whose sum is σ = 82807646761728. Its totient is φ = 6900637230048.

The previous prime is 30190287881629. The next prime is 30190287881671. The reversal of 30190287881670 is 7618878209103.

It is a super-2 number, since 2×301902878816702 (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30190287881671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71881637604 + ... + 71881638023.

It is an arithmetic number, because the mean of its divisors is an integer number (2587738961304).

Almost surely, 230190287881670 is an apocalyptic number.

30190287881670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30190287881670 is an abundant number, since it is smaller than the sum of its proper divisors (52617358880058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30190287881670 is a wasteful number, since it uses less digits than its factorization.

30190287881670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143763275644.

The product of its (nonzero) digits is 8128512, while the sum is 60.

The spelling of 30190287881670 in words is "thirty trillion, one hundred ninety billion, two hundred eighty-seven million, eight hundred eighty-one thousand, six hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 143763275627 287526551254 431289826881 718816378135 862579653762 1006342929389 1437632756270 2012685858778 2156449134405 3019028788167 4312898268810 5031714646945 6038057576334 10063429293890 15095143940835 30190287881670